[INFO] updating cached repository https://github.com/emosenkis/codediff
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 1972f1861aa499f7ad22c6287399cb43c4e9f509
[INFO] testing emosenkis/codediff against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Femosenkis%2Fcodediff" "/workspace/builds/worker-7/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/emosenkis/codediff on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/emosenkis/codediff
[INFO] finished tweaking git repo https://github.com/emosenkis/codediff
[INFO] tweaked toml for git repo https://github.com/emosenkis/codediff written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/emosenkis/codediff already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] fa7f97e01b6a0036123154831213897232d67cd62494a4a3f71d1e35760dd6cc
[INFO] running `"docker" "start" "-a" "fa7f97e01b6a0036123154831213897232d67cd62494a4a3f71d1e35760dd6cc"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling codediff v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0432]: unresolved import `std::old_io`
[INFO] [stderr]  --> src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::old_io as io;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^ no `old_io` in the root
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Path`
[INFO] [stderr]   --> src/main.rs:12:58
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let mut f1 = io::BufferedReader::new(io::File::open(&Path::new(&args[1])));
[INFO] [stderr]    |                                                          ^^^^ use of undeclared type or module `Path`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Path`
[INFO] [stderr]   --> src/main.rs:13:58
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let mut f2 = io::BufferedReader::new(io::File::open(&Path::new(&args[2])));
[INFO] [stderr]    |                                                          ^^^^ use of undeclared type or module `Path`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `args` in module `os`
[INFO] [stderr]   --> src/main.rs:11:20
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let args = os::args();
[INFO] [stderr]    |                    ^^^^ not found in `os`
[INFO] [stderr]    |
[INFO] [stderr] help: possible candidate is found in another module, you can import it into scope
[INFO] [stderr]    |
[INFO] [stderr] 1  | use std::env::args;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0425, E0432, E0433.
[INFO] [stderr] For more information about an error, try `rustc --explain E0425`.
[INFO] [stderr] error: could not compile `codediff`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "fa7f97e01b6a0036123154831213897232d67cd62494a4a3f71d1e35760dd6cc"`
[INFO] running `"docker" "rm" "-f" "fa7f97e01b6a0036123154831213897232d67cd62494a4a3f71d1e35760dd6cc"`
[INFO] [stdout] fa7f97e01b6a0036123154831213897232d67cd62494a4a3f71d1e35760dd6cc